Originally Posted by Brocephus

I've kinda been anti triple,for years, but recently lucked into a deal on a Giant hybrid that has that 3rd ring, and I've come to love it ! Now, admittedly, my racing/hard-hammering days are long gone, and while I'm holding up pretty well, i am pushing 60 now, and torquing up the hills is simply more comfortable and enjoyable with that little ring.
I also have a Franken-hybrid I built on a Marin frame, that has the now-popular single ring, and I found that I'm not digging it as much since stumbling onto this triple.
So, my answer would be, that it depends on all the variables, like your age, weight, condition, riding environment, goals, etc. Go with whatever seems to work for you.
Edit: as alluded to above, theres not much to be gained from going triple to down double, other than just wasting good money. If that's the choice, leave well enough alone, IMHO.